根据我国发展高速客运的形势和广大读者的要求,本刊分别从第7、8期开始连载空调客车讲座和高速列车制动机讲座,特此预告,希望广大读者周知,并欢迎 According to the development of high-speed passenger transport in China and the requirements of the readers, we published a series of lectures on air-conditioned buses and high-speed train brakes from the 7th and 8th stages respectively. We hereby announce that we would like to know and welcome our readers.